ok i can't find wad manager on my thing

ok so i managed to install homebrew channel using twilight hack.
people told me to get the homebrew browser first because it will have all the apps i will need.
so i got the homebrew browser and searched thru it all the way, but couldn't find wad manager? am i doing something wrong?

1. so wad is a game, right?
but does the wad manager install the wad into sd card or wii?
if it installs it to sd card, i can just remove it of course, but if it installs into wii (like wii channel thing), how can i uninstall it?

2. if i download an emulator (let's say snes for example) thru the homebrew browser, where do i place the rom to play the game? and what file format is the rom?

3. so far, i only have gecko os and homebrew browser.. that's it.. (trying to get wad manager as i said)... what else should i get? i'm totally new to wii homebrew... i'm not interested in simple/old games like tetris... but i want to use internet (internet browser) and put some .avi files on my sd card and watch it thru wii... stuff like that.. so what else should i get?